This may or may not be JMS specific, but it relates to
the default Persistence Manager used in JBoss 3.2.2
which uses "cached" tables.
It appears that SHUTDOWN is not issued to the HSQL DB
when JBoss is taken down.
It should be easy to make the HSQL plug service work
with cached tables and then do the right thing upon
shutdown. Or, create a new service which issues the